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Correlation Between Matrix Metalloproteinases With Coronary Artery Lesion Caused by Kawasaki Disease
Fang Tian1,2, Linxi Ma3, Renbing Zhao2
1Heart Center of Women and Children Hospital of Qingdao University, Qingdao, China.
Insights
Matrix metalloproteinases (MMPs) are elevated in children with Kawasaki disease (KD) and coronary artery lesions (CAL). Intravenous immunoglobulin therapy reduced MMP levels, highlighting MMPs as potential biomarkers for CAL in KD.
Area of Science:
- Cardiovascular Research
- Pediatric Immunology
- Biochemistry
Background:
- Kawasaki disease (KD) is a leading cause of acquired pediatric heart disease.
- Coronary artery lesions (CAL) are a serious complication of KD.
- The role of matrix metalloproteinases (MMPs) in CAL development is not fully understood.
Purpose of the Study:
- To investigate the association between MMP-2 and MMP-9 levels and CAL in children with KD.
- To evaluate the effect of intravenous immunoglobulin (IVIG) therapy on MMP levels in KD patients.
- To explore correlations between MMP levels and clinical parameters in KD.
Main Methods:
- Serum samples collected from healthy, febrile, and KD children (with or without CAL).
- Enzyme-linked immunosorbent assay (ELISA) used to quantify MMP-2 and MMP-9 levels.
- Comparison of MMP levels before and after IVIG treatment in KD patients.
Main Results:
- MMP-2 and MMP-9 levels were significantly higher in KD patients with CAL compared to those without.
- IVIG treatment effectively downregulated MMP levels, particularly in patients with CAL.
- MMP levels correlated significantly with clinical indicators like fever duration and white blood cell count.
Conclusions:
- Elevated MMP-2 and MMP-9 levels are strongly associated with coronary artery lesions in Kawasaki disease.
- MMPs show potential as biomarkers for identifying KD patients at risk for CAL.
- IVIG therapy demonstrates efficacy in modulating MMP levels in KD patients.
Abstract:
This study was designed to clarify the role of matrix metalloproteinases (MMPs) in coronary artery lesions (CAL). Serum samples were acquired from healthy, febrile, and Kawasaki disease (KD) children with or without CAL. Standard blood parameters were examined and enzyme-linked immunosorbent assay (ELISA) was used to assess the levels of MMP-2 and MMP-9. Intravenous immunoglobulin (IVIG) therapy was conducted on the KD patients and the changes of MMPs before and after treatment were compared. The correlations between MMP levels and clinical parameters were also evaluated. Compared to febrile and healthy controls, KD patients demonstrated clinical signs characteristic of abnormal immunoregulation. However, the clinical parameters of KD patients with or without CAL were not significantly different. MMP-2 and MMP-9 levels, however, were significantly higher in KD patients with CAL than those without CAL. IVIG treatment effectively downregulated the levels of MMPs in KD patients, which was more prominent in those with CAL. Significant correlations were found between MMP levels and some clinical parameters of KD, such as fever time, white blood cell count, etc. The upregulation of MMPs significantly correlates with coronary artery aneurysms (CAAs) in KD patients, making it important biomarkers of CAL in KD patients.
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